The goal isn't really a better markdown format — it's bringing code execution and generative UI together. The code fences run on the server: calling APIs, processing data, doing agentic work. And they can also mount reactive UIs with full data flow between client, server, and LLM.
MDX is a compile-time format for static content. This is a runtime protocol where the LLM writes code that executes as it streams, and the UIs it creates stay connected to the server.
Not yet but is on the short list to implement. What would you need from a session for single purpose agents? I'm seeing it more as a way to track what's been done.
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